<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <style>
        body{
            background: url("../../img/a5.jpg");
        }
        div{
            margin: auto;
        }




    </style>
</head>
<body>
<div class="div1">
    <input type="button" value="开始练习" id="begin" onclick="begin()">
    <input type="button" value="返回个人信息页面" id="toInfo" onclick="toInfo()">
    <input type="button" value="退出登录" onclick="logout()">
    <p id="head"></p>
    <p id="answer"></p>
</div>


</body>
</html>
